Site Specialties

Investigator Support Services (ISS) provides access to 400 clinical trial sites conducting phase I-IV research in North America. Our experienced investigators are able to enroll in any indication through their large patient databases, physician referral relationships, and patient outreach expertise. The list below indicates the number of research sites experienced in each therapeutic area.

Addiction Medicine: 59
Allergy & Immunology: 117
Anesthesiology: 24
Cardiovascular Disease: 185
Child & Adolescent Psychiatry: 38
Clinical Neurophysiology: 27
Colon & Rectal Surgery: 15
Critical Care Medicine: 32
Dental: 17
Dermatology: 143
Electrodiagnostic Medicine: 29
Emergency Medicine: 31
Endocrinology: 162
Family Practice: 201
Gastroenterology: 153
Geriatric Medicine: 128
Gynecologic Oncology: 29
Hand Surgery: 15
Hematology: 49
Infectious Disease: 113
Internal Medicine: 237
Interventional Cardiology: 35
Neonatal–Perinatal Medicine: 13
Nephrology: 57
Neurology: 117
Neuro-Rehabilitation: 22
Obstetrics & Gynecology: 106
Oncology: 32
Ophthalmology: 56
Orthopedics: 71
Otolaryngology: 48
Pain Medicine: 165
Pediatrics: 76
Physical Medicine & Rehabilitation: 49
Plastic Surgery: 26
Podiatry: 45
Preventive Medicine: 104
Psychiatry: 105
Pulmonary Diseases: 145
Radiology: 37
Reproductive Endocrinology: 36
Rheumatology: 128
Sleep Medicine: 126
Sports Medicine: 62
Surgery: 34
Thoracic Surgery: 8
Urogynecology: 56
Urology: 93
Vascular & Interventional Radiology: 16
Vascular Surgery: 21